SERVICE: Test without risk. If the replacement soft belt should not fit your heart-rate monitor, please contact us and we can provide you with a full refund. Note: Only arm belt, heart rate transmitter is not included. WEARING: Wear hr monitor armband on the upper portion of the forearm. Sensor should be on the inside or top of forearm. It should be worn snug enough not to move on your arm, but not so tight that it restricts arm circulation. COMFORTABLE AND BREATHABLE ARM BELT REPLACEMENT: The arm band is made of silicone and leica material. Wear comfort and soft, easy to clean, durable. Ensures your device stays securely attached to your arm during climbing, biking, running, and intense workouts. ADJUSTABLE SIZING: The package contains two different lengths of arm heart rate monitor strap for men and women. Replacement armband length (L * W * H): Black-400 * 22 * 3.2mm, orange-355 * 22 * 3.2mm. Please check the desired size before purchg. COMPATIBLE WITH HEART RATE SENSOR: LIVLOV V11 armband heart rate monitor soft strap width is 22mm, compatible with most heart rate monitors (ANT+, Bluetooth). Compatible for LIVLOV V9, Polar Verity Sense, Wahoo, Powr Labs, Coospo, VorTec, smartLAB, Echelon, Fitcent, XOSS heart rate armband monitor. Not compatible with Scosche Rhythm24 and Rhythm+ 2.0, OTF, Orange Theory, OTBeat Burn heart rate monitor arm and other hr sensors less than 22mm wide.Sensor Type: Wearable. Screen Size: 0.86 Inches. Color: black+orange. Material: Silicone. Brand: LIVLOV. Date First Available: April 28, 2022. Best Sellers Rank: #18 in MP3 Player Armbands. Customer Reviews: 4.1 out of 5 stars 39 ratings 4.1 out of 5 stars. : B09FL196HX. Size: ?22mm wide. Style: ?Modern. Manufacturer: ?LIVLOV. Suggested Users: ?men and women. Material: ?Silicone. Color: ?black+orange. Brand Name: ?LIVLOV. Package Weight: ?0.07 Kilograms. Item Package Dimensions L x W x H: ?3.94 x 3.7 x 2.4 inches.